[Table of Contents]

Plasma and Fusion Research

Volume 6, 2403129 (2011)

Regular Articles

Evaluation of Monte Carlo Calculation Accuracy for α Particle Confinement Analysis in Heliotron Reactors
Yoshitada MASAOKA and Sadayoshi MURAKAMI
Kyoto University, Kyoto 606-8501, Japan
(Received 19 January 2011 / Accepted 13 July 2011 / Published 16 September 2011)


The GNET code is used to study α particle confinement with energy diffusion and pitch angle scattering in helical plasmas based on the Monte Carlo technique. The dependency of the accuracy of the distribution function on the number of test particles is studied. It is found that, as the number of test particles is increased, the shape of the velocity space distribution becomes smooth and the scattering of the energy loss fraction becomes small and converges to 5.06%.


α particle confinement, dependence on number of particle, GNET, LHD, Monte Carlo method

DOI: 10.1585/pfr.6.2403129


  • [1] A. Iiyoshi et al. Nucl. Fusion 39, 1245 (1999).
  • [2] S. Murakami et al. Nucl. Fusion 42, L19 (2002).
  • [3] S. Murakami et al. Nucl. Fusion 46, S245 (2006).
  • [4] Allen H. Boozer and G. Kou-Petravic, Phys. Fluids 24, 851 (1981).

This paper may be cited as follows:

Yoshitada MASAOKA and Sadayoshi MURAKAMI, Plasma Fusion Res. 6, 2403129 (2011).